Pipe wrench



1". ANDERsoN PIPE WRENCH Aug. 26, 1930.

Filed Julyl 5, 192B lill.

2 Sheets-Sheetl 2 77. Hna-@515011 Patented Aug. 2.6, 1930 THOMAS ANDERSON, OF HOUSTON, IEXJLS PIPE 'WRENCH YApplication inea .my 3, 192s. serial No. 290,059.

grip upon the part to be turned for the same reason. j

Another object is to provide a wrench of this character which will be particularly strong and which may be as cheaply made as other wrenches of like general character.v Y My invention is illustrated in the accompanying drawings in which- Fig. 1 is aside elevation of a wrench constructed in accordance withmy invention; Fig. 2 is a longitudinal sectional view thereof; Fig. 3 is atop plan view thereof;

Fig. 4 is a section on the line 4-40f Fig. 2 Fig. 5 is a fragmentary longitudinal section through the sleeve and the thimble of the wrench shown in Fig. 1 and taken on the line 55 of Fig. 2; and Y Fig. 6 is a like view to Fig. 2 but showing a modification of the structure. Y y

The wrench as illustrated in Fig. 1, coniprises a jaw 10 having a straight shank 11 preferably rectangular in form, this shank having an extension-12 reduced in cross sectional area. This shankisprovided with interrupted screw threadsl upon its opposite edges. Fitting over and having sliding engagement withthe shank 11 is a sleeve orjacket 14 which has an internal diameter adapted to accommodatethe portion 11 of the shank and slide freely thereon. That portion of this sleeve which is adjacent the aw 10 1s rectangular in cross section but the opposite end of the sleeve is circular in cross section as at 15. Disposed withinthe circular portion of the sleeve and engaged therewith in any suitable manner is a thimble 16 having an annular flange 17 at its inner end,

this thimble being adapted to slide over the reduced portion 12 of the shankll without interrupting the teeth or screw threads 13.` Surrounding the shank portion 12 and spaced therefrom is a tubular or'hollow handle 18 closed at its outer end by means'of a screw i cap 19 and at its inner end being formed with an inwardly lextending annular flange 2OV which extends over the outwardly projecting dle 1.8 and engaged therewith in any'suitf able manner, 'as for instance by the rivets,

screws, pins or like members 21, is a nut 22, which is interiorily screw-threaded for engagement with the interrupted screw-threads 13. This nut is insertable into place through cap 1 j 1t will thus be seen that by rotating the handle in one direction or the other the shank and the handle with the sleeve 14 will be longitudinally shifted relative t-o each other `in opposite directions. Y The sleeve 14 carries upon it the .laterally projecting longitudinally extended socket l 23wvithin which is disposed the' shank 24 of ajaw 25 confronting the jaw 10 and extending at right angles to the shank 24. The

the opening normally closed by the screw shank 24 as shown most clearly in Fig. 2 is .4 pivoted upon the transverse bolt or stud 26 which of course extends through the socket and the inner face of the shank from a point opposite the pivot bolt or stud 26 and is outwardlycurved or cut away as at'27. The pivot bolt, it will be seen, is disposed adjacent that end of the socket 23 nearest to the jaw 25 and thusthe radius of the jaw is rendered relatively short. -By reducing this radius Aand by cutting away that portion of the shank 24 beyond pivot bolt 26,-the pivoted j aw is permitted to turn outward to a greater extent than is possible, as in the ordinary .Stillson wrench, where the is pivoted adjacent its extreme inner end.

V1n Fig. 6, I have illustratedy a modified form of this wrench in which the handle 18a has an inwardly extending annular flange'()n asher-etoforedescribed, but in which the jacket or sleeve 14L is vitself formed with an annular groove 28.` f

fill-.a

fi 'i Under these circumstances the flanged end of the handle would have to be forced over the flanged end of the sleeve lll and seated in said groove 28. I do not wish to be lin'iited to having the handle formed with an inturned flange and the shank of the jacket or sleeve formed with an outwardly turned flange vor with a groove, as obviously the sleeve'inight be formed with an inwardly turned flange engaging with a groove Jformed in the handle or with an outwardly turned flange on the handle. In other words, t ie relative structure oi"- the' engaging ends of the handle and sleeve might be reversed.

It is obvious also that many minor medihcations niightbe niade in the detailsl this wrench without departing from the spirit of the invention as defined in the appended claims.V

What I claim is- 1. A wrench of the character described comprising a aw having a shanlnthe shank ,having screw threads, a sleeve slidably mounted upon the shank, a handle surrounding the shank and having a removable cap at its outer end, a nut engaging the screw threads, andr insertable in the handle through they opening normally closed by said cap, the handle and sleevehaving swiveled engagement with each other and the sleeve having a laterally projecting socket, al jaw confronting` the first named and having` a shank eX- tending into said socket and pivoted therein, the pivot being disposed adjacent that end of the socket reinote from the handle and the inner face oi the jaw shank being cut away from said pivot point to the extremity of the shank adjacent the handle to thereby permit the sliank'to be swung outward or inward.

2, A wrench of the charac-ter described comprising a vjaw having a shank, the shank being' reduced and provided with screw threads, a sleeve slidably mounted upon the unreduced portion of the shank, a hollow iandle surrounding the reduced portion of the shank and carrying a nut within it engaging the screw threads or' the shank, the sleeve and handle being iorined one with an outwardly projecting flange and the other with an inwardly projecting overlapping flange whereby to secure a swiveled enga-gement between the handle and the sleeve, the sleeve at its end remote from the handle being laterally offset and Vlongitudinally extended to l form a socket rectangularin cross section and f a aw confronting the first nanied jaw and having a longitudinally extending shank fittin g in the socket and pivoted thereto, the inner face of the shank beyond the pivot being inclined outward and rearward away from the sleeve.

mounted upon the shanky for longitudinal movement, a hollow handle surrounding the screw-threaded portion of the shank and having an inwardly extending flange at its inner end, the outer end of the handle having a detachably closing this end of the handle, and a thinible having a at its end adjacent the handle, the 'flange enacting with the flange on the handle to secure a swiveled engagement between these parts, the thimble being attached to the sleeve and being insertable through the open end oli the handle, said sleeve having a laterally offset portion formed to provide a socket, and a jaw shank extending into said socket and pivoted there to, the shank being cut away upon its inner face and inward of said pivot.

In testimony whereof I hereunto aliii; my

signature. Y

THOMAS ANDERSGN. 

